Doctor profile · Federal record

Dr. Nader Ismail, DO

Nephrology Physician (CMS: Nephrology) · Nephrology Physician · Merrillville, IN

  • NPI 1689135618
  • Accepts Medicare
  • 7 yrs in practice
  • Licensed in 2 states
  • Male
  • Solo practice
  • No sanctions

Practice & contact

Operates at 2 locations .

NPPES Updated May 11, 2026
Primary practice
90 W 86Th Ave
Merrillville, IN 464107086
(219) 791-1555
Additional location
5615 US Highway 6
Portage, IN 463685213
(219) 462-6001
Mailing address
120 W 22Nd St
Oak Brook, IL 605231557

Credentials & registration

NPPES · NUCC
NPI registered
March 2019 — 7 yrs on file
Profile last updated
June 19, 2025
Year of graduation
2019 — 7 yrs since
Specialty taxonomy
207RN0300X — NUCC code
State licenses (2)
Indiana #02007817A · Illinois #036.161002

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1689135618. Last verified May 11, 2026.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$226
Transactions
9
Manufacturers
8
Payer (manufacturer) Industry Txns Amount
Mallinckrodt Hospital Products INC. 2 $57.28
Bayer Healthcare Pharmaceuticals INC. 1 $31.51
Otsuka America Pharmaceutical, INC. 1 $28.25
Travere Therapeutics, INC. 1 $25.69
Ardelyx, INC. 1 $24.06
Opko Pharmaceuticals, LLC 1 $20.93
Otsuka Pharmaceutical Development & Commercialization, INC. 1 $19.80
Fresenius USA Marketing, INC. 1 $18.66

By nature of payment

Food and Beverage
$205
Education
$21

Hospital affiliations

CMS Hospital Compare

Frequently asked questions

Auto-generated from federal data
What is Dr. Nader Ismail's medical specialty?
Dr. Nader Ismail practices Nephrology Physician in Merrillville, IN.
Where does Dr. Nader Ismail practice?
Dr. Nader Ismail practices at 90 W 86Th Ave, Merrillville, IN 464107086. Office phone: 2197911555.
What is Dr. Nader Ismail's NPI?
Dr. Nader Ismail's National Provider Identifier (NPI) is 1689135618, issued by NPPES.
Does Dr. Nader Ismail accept Medicare assignment?
Yes. Dr. Nader Ismail accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.